1/* SPDX-License-Identifier: GPL-2.0 */ 2/****************************************************************************** 3 * 4 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved. 5 * 6 * Modifications for inclusion into the Linux staging tree are 7 * Copyright(c) 2010 Larry Finger. All rights reserved. 8 * 9 * Contact information: 10 * WLAN FAE <wlanfae@realtek.com> 11 * Larry Finger <Larry.Finger@lwfinger.net> 12 * 13 ******************************************************************************/ 14#ifndef _WIFI_H_ 15#define _WIFI_H_ 16 17#include <linux/compiler.h> 18#include <linux/ieee80211.h> 19 20#define WLAN_HDR_A3_LEN 24 21#define WLAN_HDR_A3_QOS_LEN 26 22 23enum WIFI_FRAME_TYPE { 24 WIFI_QOS_DATA_TYPE = (BIT(7) | BIT(3)), /*!< QoS Data */ 25}; 26 27#define SetToDs(pbuf) ({ \ 28 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_TODS); \ 29}) 30 31#define GetToDs(pbuf) (((*(__le16 *)(pbuf)) & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0) 32 33#define ClearToDs(pbuf) ({ \ 34 *(__le16 *)(pbuf) &= (~cpu_to_le16(IEEE80211_FCTL_TODS)); \ 35}) 36 37#define SetFrDs(pbuf) ({ \ 38 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_FROMDS); \ 39}) 40 41#define GetFrDs(pbuf) (((*(__le16 *)(pbuf)) & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0) 42 43#define ClearFrDs(pbuf) ({ \ 44 *(__le16 *)(pbuf) &= (~cpu_to_le16(IEEE80211_FCTL_FROMDS)); \ 45}) 46 47static inline unsigned char get_tofr_ds(unsigned char *pframe) 48{ 49 return ((GetToDs(pframe) << 1) | GetFrDs(pframe)); 50} 51 52#define SetMFrag(pbuf) ({ \ 53 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_MOREFRAGS); \ 54}) 55 56#define GetMFrag(pbuf) (((*(__le16 *)(pbuf)) & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0) 57 58#define ClearMFrag(pbuf) ({ \ 59 *(__le16 *)(pbuf) &= (~cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)); \ 60}) 61 62#define SetRetry(pbuf) ({ \ 63 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_RETRY); \ 64}) 65 66#define GetRetry(pbuf) (((*(__le16 *)(pbuf)) & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0) 67 68#define ClearRetry(pbuf) ({ \ 69 *(__le16 *)(pbuf) &= (~cpu_to_le16(IEEE80211_FCTL_RETRY)); \ 70}) 71 72#define SetPwrMgt(pbuf) ({ \ 73 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_PM); \ 74}) 75 76#define GetPwrMgt(pbuf) (((*(__le16 *)(pbuf)) & \ 77 cpu_to_le16(IEEE80211_FCTL_PM)) != 0) 78 79#define ClearPwrMgt(pbuf) ({ \ 80 *(__le16 *)(pbuf) &= (~cpu_to_le16(IEEE80211_FCTL_PM)); \ 81}) 82 83#define SetMData(pbuf) ({ \ 84 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_MOREDATA); \ 85}) 86 87#define GetMData(pbuf) (((*(__le16 *)(pbuf)) & \ 88 cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0) 89 90#define ClearMData(pbuf) ({ \ 91 *(__le16 *)(pbuf) &= (~cpu_to_le16(IEEE80211_FCTL_MOREDATA)); \ 92}) 93 94#define SetPrivacy(pbuf) ({ \ 95 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); \ 96}) 97 98#define GetPrivacy(pbuf) (((*(__le16 *)(pbuf)) & \ 99 cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0) 100 101#define GetOrder(pbuf) (((*(__le16 *)(pbuf)) & \ 102 cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0) 103 104#define GetFrameType(pbuf) (le16_to_cpu(*(__le16 *)(pbuf)) & \ 105 (BIT(3) | BIT(2))) 106 107#define SetFrameType(pbuf, type) \ 108 do { \ 109 *(__le16 *)(pbuf) &= cpu_to_le16(~(BIT(3) | \ 110 BIT(2))); \ 111 *(__le16 *)(pbuf) |= cpu_to_le16(type); \ 112 } while (0) 113 114#define GetFrameSubType(pbuf) (le16_to_cpu(*(__le16 *)(pbuf)) & \ 115 (BIT(7) | BIT(6) | BIT(5) | BIT(4) | BIT(3) | \ 116 BIT(2))) 117 118#define SetFrameSubType(pbuf, type) \ 119 do { \ 120 *(__le16 *)(pbuf) &= cpu_to_le16(~(BIT(7) | BIT(6) | \ 121 BIT(5) | BIT(4) | BIT(3) | BIT(2))); \ 122 *(__le16 *)(pbuf) |= cpu_to_le16(type); \ 123 } while (0) 124 125#define GetSequence(pbuf) (le16_to_cpu(*(__le16 *)\ 126 ((addr_t)(pbuf) + 22)) >> 4) 127 128#define GetFragNum(pbuf) (le16_to_cpu(*(__le16 *)((addr_t)\ 129 (pbuf) + 22)) & 0x0f) 130 131#define SetSeqNum(pbuf, num) ({ \ 132 *(__le16 *)((addr_t)(pbuf) + 22) = \ 133 cpu_to_le16((le16_to_cpu(*(__le16 *)((addr_t)(pbuf) + 22)) & \ 134 0x000f) | (0xfff0 & (num << 4))); \ 135}) 136 137#define SetPriority(pbuf, tid) ({ \ 138 *(__le16 *)(pbuf) |= cpu_to_le16(tid & 0xf); \ 139}) 140 141#define GetPriority(pbuf) ((le16_to_cpu(*(__le16 *)(pbuf))) & 0xf) 142 143#define SetAckpolicy(pbuf, ack) ({ \ 144 *(__le16 *)(pbuf) |= cpu_to_le16((ack & 3) << 5); \ 145}) 146 147#define GetAckpolicy(pbuf) (((le16_to_cpu(*(__le16 *)pbuf)) >> 5) & 0x3) 148 149#define GetAMsdu(pbuf) (((le16_to_cpu(*(__le16 *)pbuf)) >> 7) & 0x1) 150 151#define GetAddr1Ptr(pbuf) ((unsigned char *)((addr_t)(pbuf) + 4)) 152 153#define GetAddr2Ptr(pbuf) ((unsigned char *)((addr_t)(pbuf) + 10)) 154 155#define GetAddr3Ptr(pbuf) ((unsigned char *)((addr_t)(pbuf) + 16)) 156 157#define GetAddr4Ptr(pbuf) ((unsigned char *)((addr_t)(pbuf) + 24)) 158 159static inline unsigned char *get_hdr_bssid(unsigned char *pframe) 160{ 161 unsigned char *sa; 162 unsigned int to_fr_ds = (GetToDs(pframe) << 1) | GetFrDs(pframe); 163 164 switch (to_fr_ds) { 165 case 0x00: /* ToDs=0, FromDs=0 */ 166 sa = GetAddr3Ptr(pframe); 167 break; 168 case 0x01: /* ToDs=0, FromDs=1 */ 169 sa = GetAddr2Ptr(pframe); 170 break; 171 case 0x02: /* ToDs=1, FromDs=0 */ 172 sa = GetAddr1Ptr(pframe); 173 break; 174 default: /* ToDs=1, FromDs=1 */ 175 sa = NULL; 176 break; 177 } 178 return sa; 179} 180 181/* --------------------------------------------------------------------------- 182 * Below is the fixed elements... 183 * --------------------------------------------------------------------------- 184 */ 185#define _BEACON_ITERVAL_ 2 186#define _CAPABILITY_ 2 187#define _TIMESTAMP_ 8 188 189 190/*----------------------------------------------------------------------------- 191 * Below is the definition for WMM 192 *------------------------------------------------------------------------------ 193 */ 194#define _WMM_IE_Length_ 7 /* for WMM STA */ 195 196#endif /* _WIFI_H_ */ 197 198